// Functions copied from FormChek.js (c) 1997 Netscape Communications Corporation

var reWhitespace = /^\s+$/

var mPrefix = "You did not enter a value into the "
var mSuffix = " field. This is a required field. Please enter it now."

var defaultEmptyOK = false

function warnEmpty (theField, s)
{   theField.focus()
    alert(mPrefix + s + mSuffix)
    return false
}

function isWhitespace (s)
{   // Is s empty?
    return (isEmpty(s) || reWhitespace.test(s));
}

function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}

function checkString (theField, s, emptyOK)
{   // Next line is needed on NN3 to avoid "undefined is not a number" error
    // in equality comparison below.
    if (checkString.arguments.length == 2) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (isWhitespace(theField.value)) 
       return warnEmpty (theField, s);
    else return true;
}